Is it true that some CPU from 2012 is 3 times faster than CPU from 2008?

Discussion in 'Community Discussion' started by nec207, Jul 17, 2012.

  1. nec207 macrumors 6502

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    Mar 21, 2011
    #1
    Some was saying to me in e-mail that some CPU from 2012 is 3 times faster than CPU from 2008?

    Is that true ? I know there are some people here into engineering and really into hardware who may explain this better.
     
  2. sviato macrumors 68020

    sviato

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  3. lewis82 macrumors 68000

    lewis82

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    #4
    If you had actually read the article (well, the intro) then you would know that it states that the number of transistors doubles every 12/18/24 months.

    Now the thing is, most of the transistors on a modern CPU are used to build the cache, which requires 6 transistors per bit. And even if I ignore that, there is the fact that adding more cores does not scale performance linearly (https://upload.wikimedia.org/wikipedia/commons/thumb/e/ea/AmdahlsLaw.svg/1000px-AmdahlsLaw.svg.png).
     
  4. wywern209 macrumors 65832

    wywern209

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    do you rly want to know?
    #5
    OP, clock speed doesnt matter anymore. Each major series of processor is built using different architectures. this can make them faster and consume less power as well. Even if you have a 5ghz single core processor, a 2 ghz quad core from 2012, will much much faster because of its more recent architecture with more innovations. having more cores means the tasks for a program can be spread across the cores. if we use the analogy of chefs in a kitchen. what is faster, a fast chef who can prepare and serve a dish in 1 hr or 4 medium speed chefs who do different parts at the same time( prep work, side dishes, sauce etc) and serve the dish in 30 minutes. different architectures sort of translates to different chefs. I hope this improved your understanding of processors. there is obviously more to it. just google.
     
  5. Dviper27 macrumors member

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  6. Nioxic macrumors regular

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    #7
    i don't think its comparable like that. cpus get more advanced..

    intel said their ivy bridge is / was 10-20% faster than their sandy bridge..

    thats not double..

    the amount of transistors increase a lot but the other parts of the cpu changes too

    that being said, i know nothing about transistors and the stuff inside a cpu :)
     

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